Ummm.... Doesn't almost any app do just that?
I mean, there are IM clients that piggy back on your data plan and allow you to text and use SMS services which bypass their texting plan and services?
Are there not apps like Skype out there, that would allow someone to sign up for a data plan but choose the cheapest minute plan, and then use the data plan to make unlimited phone voice calls to anywhere in the world? Something that VZW would charge a lot more money for if someone wanted unlimited calling and an international plan?
What about apps that let you stream video, like YouTube, Netflix and Hulu, while VZW has their own VCast streaming services that they charge for?
The problem with your argument is that what you propose shouldn't or won't happen, already has in many areas. It just hasn't happened to this one area yet; Tethering.
There are plenty of apps out there that provide free services that let you bypass the ones that VZW offers and charges for, and they can all require using or "piggybacking" on VZW's data plan and network in order to function.
Wait so these apps can operate without VZW's data plan? Like I said, the most that will happen is VZW will be forced to unblock the apps. Their bottom line is not going to be affected at all. They will still charge for tethering, people will still pay and they will still throttle. You're acting as if this ruling reverses the unblocking of tethering apps, that suddenly everyone is going to start using PDANet to tether. You fail to realize that people are paying to tether on verizon, and they will continue to pay.
As for the examples you gave, all of them require you to have a data plan from Verizon. As much as you think you're pulling one over on them, you're not...at all. Sending free text messages, how does that affect VZW? By your own admission, texts cost them nothing right? And as mentioned, they can just raise prices and bundle texting with a data plan and force you to pay. Skype, the one offered by Verizon only works over 3G, so you're still paying Verizon. The one offered by Skype itself, works over wifi, but again, you still have a smartphone with a data and voice plan, and you're still paying Verizon every month. You're acting as if people are going over on their minutes every month and Skype has freed them from this burden. Wrong. The actuality is people are paying for minutes they don't use, and texts they don't use. Verizon is not affected if you use Skype over wifi, because they're still getting paid regardless.
As for tethering, I know you like arguing for the sake of arguing, but the differences between Skype, Hulu and Netflix and tethering should be quite evident. If not, then there is no point in this discussion (although I doubt there was a point to begin with).